Approximate Speaker Zone Wire Loss — 70.7V Option; Approximate Speaker Zone Wire Loss — 25V Option - Siemens HCP Installation Instructions Manual

HCP As (70.7V/25V) Speaker Zone in a FV2025/FV2050 or FV922/FV924 System
HCP USED FOR 70.7V RMS OPTION
0
-0.05
-0.10
-0.15
SPEAKER LOAD: 25 WATTS AT 70.7V RMS
LOCATED AT END OF RUN
DOES NOT INCLUDE ANY LOSS
IN RISER RUN
-0.20
-0.25
100 200
300 400
TOTAL SPEAKER ZONE WIRE LENGTH (FEET)
Figure 7
Approximate Speaker Zone Wire Loss — 70.7V Option
Siemens Industry, Inc.
Building Technologies Division
The 70.7V/25V RMS audio input to the HCP must be power limited, such as from the
VCI2001-U1 Amplifier Card. The VCI2001-U1 supervises the audio connection path to
the HCP and provides up to 50 watts of power. The VCI2001-U1 can be wired Style Y
(Class B) or Style Z (Class A). Refer to the VCI2001-U1 Installation Instructions,
Document ID A6V10370410, for further information. In order to function properly
during degrade mode, the periphery FCI2016/2017-U1 to which the HCP is connected
must be located in the same enclosure as the FDNET and VCI2001-U1 that supply
audio to the HCP .
When the HCP is used as a speaker zone, the output speaker lines are only super-
vised when the zone is not active. The audio output must not be allowed to exceed
25 watts. The approximate decibel loss for the total speaker zone wire length for
various wire gauge sizes is shown in Figure 7 for the 70.7V option and in Figure 8 for
the 25V option. Connect the speaker output as Style Z (Class A) or Style Y (Class B) as
shown in Figures 10 and 11.
APPROXIMATE SPEAKER ZONE WIRE LOSS
IN DECIBELS FOR VARIOUS GAUGE WIRES VERSUS
TOTAL SPEAKER ZONE WIRE LENGTH (FEET),
WHICH IS TWICE THE WIRE RUN LENGTH.
500 600 700 800 900 1000
HCP USED FOR 25V RMS OPTION
0
-.5
-1.0
-1.5
SPEAKER LOAD: 25 WATTS AT 25V RMS
LOCATED AT END OF RUN
DOES NOT INCLUDE ANY LOSS
IN RISER RUN
-2.0
-2.5
100 200
300
TOTAL SPEAKER ZONE WIRE LENGTH (FEET)
Figure 8
Approximate Speaker Zone Wire Loss — 25V Option
7
APPROXIMATE SPEAKER ZONE WIRE LOSS
IN DECIBELS FOR VARIOUS GAUGE WIRES VERSUS
TOTAL SPEAKER ZONE WIRE LENGTH (FEET),
WHICH IS TWICE THE WIRE RUN LENGTH.
400 500 600 700 800 900
P/N 315-034860-13
1000